# ultraviolet
## English
### Etymology

From ultra- (“beyond”) +‎ violet (“violet”).

### Pronunciation

* (Received Pronunciation, General American) IPA: /ˌʌltɹəˈvaɪələt/, /ˌʌltɹəˈvaɪlət/
* Audio (Southern England):(file)

### Adjective

ultraviolet (comparative more ultraviolet, superlative most ultraviolet)
* Of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 to 10 nanometres.
* (figurative, physics) Relating to very high energies or very small distances or time spans.
    Antonym: infrared
** 2004, Barton Zwiebach, A First Course in String Theory, →ISBN, Figure 23.1, page 519:A one-loop Feynman graph that represents a virtual process. In the limit in which the virtual process involves short distances or high momenta, one may find an ultraviolet divergence in the corresponding amplitude.
** 2009, Herbert W. Hamber, Quantum Gravitation: The Feynman Path Integral Approach, →ISBN, page vii:Some have advocated the search for a new theory of quantum gravity, a theory which does not suffer from ultraviolet infinity problems.
** 2017, David F. Chernoff, S.-H. Henry Tye, “Inflation, string theory and cosmic strings”, in Wei-Tou Ni, editor, One Hundred Years of General Relativity […], volume 2, →ISBN, page 275:Since current gravitational observations are insensitive to quantum effects, one may wonder why an ultraviolet completion of the gravity theory is needed if inflation, in fact, occurs several orders of magnitude below the Planck scale.

#### Derived terms

* extreme ultraviolet
* ultraviolet A
* ultraviolet astronomy
* ultraviolet B
* ultraviolet C
* ultraviolet catastrophe
* ultraviolet light

#### Translations
### Noun

ultraviolet (countable and uncountable, plural ultraviolets)
* Ultraviolet colour.

#### Translations
### See also

* ultraviolet radiation

## Danish
### Adjective

ultraviolet
* ultraviolet

#### Inflection

$^1$ When an adjective is applied predicatively to something definite, the corresponding "indefinite" form is used. $^2$ The "indefinite" superlatives may not be used attributively.

### References

* “ultraviolet” in Den Danske Ordbog

## French
### Etymology

From ultra- +‎ violet.

### Pronunciation

* Audio:(file)

### Adjective

ultraviolet (feminine ultraviolette, masculine plural ultraviolets, feminine plural ultraviolettes)
* ultraviolet

### Noun

ultraviolet m (plural ultraviolets)
* ultraviolet (light)

### Further reading

* “ultraviolet”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

## Indonesian
### Etymology

Internationalism, from ultra- +‎ violet.

### Pronunciation

* (Standard Indonesian) IPA: /ultraviˈɔlɛt/ [ul.t̪ra.fiˈɔ.lɛt̪̚]
* Syllabification: ul‧tra‧vi‧o‧let

### Adjective

ultraviolet
* ultraviolet (of electromagnetic radiation with wavelengths from 380 to 10 nanometres)
    Synonym: ultraungu

### Noun

ultraviolet
* ultraviolet (ultraviolet color)
    Synonym: ultraungu

### Further reading

* “ultraviolet” in Kamus Besar Bahasa Indonesia, Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016.

## Romanian
### Etymology

Borrowed from French ultraviolet. Equivalent to ultra- +‎ violet.

### Adjective

ultraviolet m or n (feminine singular ultravioletă, masculine plural ultravioleți, feminine and neuter plural ultraviolete)
* ultraviolet